홈 / 책 찾기 / 판 고르기
판 4개, 최신 판부터
Open University Press, 2005, ISBN 9780335217229
University of Minnesota Press, 1998, 무선(페이퍼백), ISBN 9780816631278
Open University Press, 1997, ISBN 9780335198610
University of Minnesota Press, 1997, ISBN 9780816631261
